From 39e97b8b18ac954fc75e3c6c0b02930a7b227817 Mon Sep 17 00:00:00 2001
From: Mauricio Sanchez <mausancarr0704@gmail.com>
Date: Thu, 16 Apr 2026 12:48:00 -0600
Subject: [PATCH] Fix null-deref in os_get_host_and_cname_by_name when
 ai_canonname is NULL

Signed-off-by: Mauricio0704 <mausancarr0704@gmail.com>
---
 util/bb_oscompat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/util/bb_oscompat.c b/util/bb_oscompat.c
index edfe892e35..d06167410c 100644
--- a/util/bb_oscompat.c
+++ b/util/bb_oscompat.c
@@ -50,7 +50,7 @@ static int os_get_host_and_cname_by_name(char **name_ptr, struct in_addr *addr,
     }
 
     if (cname != NULL)
-        *cname = strdup(res->ai_canonname);
+        *cname = res->ai_canonname ? strdup(res->ai_canonname) : NULL;
 
     freeaddrinfo(res);
     return 0;